Pistoleer Archive

I have master pistoleer and BH pistol maxed out, but I just recently returned to the game and I was wondering what advice you might have to offer about which tree(s) of fencer I should pursue now that I don't need all that Scout for my BH tree.

If I only have enough points to dabble in fencer because I pursue INV3 then where should I spec?

If I don't go for INV3 then what one or two trees in fencer should I go for?

Thanks

Boul